首页|ERF4 affects fruit ripening by acting as a JAZ interactor between ethylene and jasmonic acid hormone signaling pathways

ERF4 affects fruit ripening by acting as a JAZ interactor between ethylene and jasmonic acid hormone signaling pathways

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The regulation of apple(Malus domestica)fruit texture during ripening is complex and a fundamental determinant of its commercial quality.In climacteric fruit,ripening-related processes are regulated by ethylene(ET),and jasmonate(JA)is also involved in the ethylene biosynthesis pathway,mainly through the transcription factor MYC2.However,the molecular genetic mechanism for fruit ripening processes between the JA and ET signaling pathways still needs to be elucidated.In order to explore how JA regulates apple fruit ripening through ERF4,we used'Gala'and'Ralls Janet'fruit at different developmental stages as experimental materials to determine the fruit firmness and related gene expression analysis.Meanwhile,we carried out different hormone treatments on'Gala'fruit at ripening stage.Here,we show that ERF4 is a core JA signaling hub protein JASMONATE ZIM-DOMAIN(JAZ)interactor that affects ethylene signaling pathways.During fruit development,ERF4 represses the expression of ACS1 and AC01 by interacting with JAZ,as well as with the JA-activated transcription factor MYC2.Ripening is promoted in JAZ-suppressed apples.Thus,ERF4 acts as a molecular link between ethylene and JA hormone signals,and the natural variation of the ERF4 Ethylene-responsive binding factor-associated amphiphilic repression(EAR)motif decreases repression of ethylene biosynthesis genes.

AppleERF4EthyleneFruit ripeningJAZ

Yanan Hu、Hualin Sun、Zhenyun Han、Shuai Wang、Ting Wang、Qiqi Li、Ji Tian、Yi Wang、Xinzhong Zhang、Xuefeng Xu、Zhenhai Han、Ting Wu

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State Key Laboratory of Agrobiotechnology,College of Horticulture,China Agricultural University,Beijing 100193,China

Plant Science and Technology College,Beijing University of Agriculture,Beijing 102206,China

National Key Research and Development ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaConstruction of Beijing Science and Technology Innovation and Service Capacity in Top Subjects111 ProjectEngineering Research Center of Breeding and Propagation of Horticultural Crops,Ministry of Education

2018YFD10002003187294132072543CEFF-PXM2019_014207_000032B17043

2022

园艺学报(英文版)

园艺学报(英文版)

CSTPCDCSCDSCI
ISSN：
年,卷(期)：2022.8(6)
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